Abstract:
Effects of Silver Nitrate Solution of Escherichia coli. Isa Dougherty and Leida Voulgaropoulos.
The purpose of this experiment was to test the toxicity of silver on microorganisms. Ionized silver forms strong molecular bonds with molecules that are essential to bacterial respiration, inhibiting the growth of the bacteria. In this experiment, paper circles diluted with unique concentrations of silver nitrate were placed on agar plates streaked with Escherichia coli. Serial Dilutions were conducted in order to test a range of molarities. The results of the experiment indicated that silver nitrate did not inhibit the growth of Escherichia coli. Silver nitrate solution appears to be an ineffective antibacterial agent for Escherichia coli. Key Terms: Silver Nitrate Solution, Antimicrobial, Serial Dilutions, Ionized Silver
Effects of Silver Nitrate Solution of Escherichia coli. Isa Dougherty and Leida Voulgaropoulos.
The purpose of this experiment was to test the toxicity of silver on microorganisms. Ionized silver forms strong molecular bonds with molecules that are essential to bacterial respiration, inhibiting the growth of the bacteria. In this experiment, paper circles diluted with unique concentrations of silver nitrate were placed on agar plates streaked with Escherichia coli. Serial Dilutions were conducted in order to test a range of molarities. The results of the experiment indicated that silver nitrate did not inhibit the growth of Escherichia coli. Silver nitrate solution appears to be an ineffective antibacterial agent for Escherichia coli.
Key Terms: Silver Nitrate Solution, Antimicrobial, Serial Dilutions, Ionized Silver
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References:
De Souza A., Mehta D., Leavitt R.W. 2006 October 10. Bactericidal activity of combinations of silver. Available from: http://search.ebscohost.com/login.aspx?direct=true&db=sch&AN=23004333&site=ehost-live
Tilton, R C, Rosenberg, B. 1978. Reversal of the silver inhibition of microorganisms by agar.
Available from: http://aem.asm.org.floyd.lib.umn.edu/cgi/reprint/35/6/1116?maxtoshow=&hits=10&RESULTFORMAT=&fulltext=silver+toxicity&searchid=1&FIRSTINDEX=0&resourcetype=HWCITAppl.
Apparatus